HLK-LD2450 Initial experiments to connect to HomeAssistant

ESPHome
557

Hi, i have been playing around with one of these sensors (just the board from aliexpress) and its really cool. any tips on getting the bh1750 working? im assuming i need to solder extra wires to something since it uses i2c not uart but i cant work out where.

nvm, i think i missunderstood the ebay listing for the full sensor. when it said “A professional light sensor BH1750 is integrated in the radar” i thought “the radar” meant the board itself but now i think it just means the sensor they sell. i dont think the board has it

558

Dear all,
I would like to use the LD2450 to turn on a bedroom lamp when someone is standing up or getting out of bed, but not when they are lying down on the bed (while sleeping).
I was thinking of placing the sensor centered above the bed (for example, near the ceiling light fixture) so that I could create a mask zone to cover the bed area.
What do you think?
Thanks

559

Would it not be easier if you just put a motion sensor on bottom part of a wall or the bedside table where the lamp might be on?

560

Hi,
Yes, the motion sensor could be ok if you are moving but not if you are just standing up.
By the way I should try both solutions.
Thanks

561

i’d be interested too.
i mean, just the sensor with the bluetooth antenna
did you find anything? it seems i can find only enclosures with also an esp attached…

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562

im using the screek esphome config on a custom device and have been testing using its exclude zone to mask out my bed so i can have the light still come on if someone comes in the room at night.

this covers the time when i was actually in bed (night mode is my old system for disabling motion detection). as you can see the exclude zone (my bed) is showing as occupied most of the night with the main sensor showing a few false triggers. i think with some tuning to the exclude zone and maybe a bit of a trigger delay at night it would be fully possible to make this reliable enough to us

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563

where have you located the sensor?

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564

in the corner of my bedroom

S────────────┐
│DDDDD      ╱
│            │
│            │
│BBB         │
└────────────┘

(S=sensor, D=desk and B=bed. sorry, this was easier than trying to draw it with a mouse)

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565

I would like to install ld 2450 on esp8266 but I can’t find a firmware can you recommend one to me

566

There are quite a number of different external integrations that have been developed for the LD2450. I’m not sure however if anyone has tried using an esp8266 as most of the discussions has been around using ESP32 boards.

I personally based my YAML config around the SCREEK implementation:

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567

Hello, can you help me with distance meauserment on ld2450? I try to tweak some settings via serial tool (sscom), but i receive no distance signal (it stays same all time). Using HLK Radar tool working fine, but for my project i need serial data. Thanks in advance

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568

How did you make that radar card in your screenshot? Can you share the sauce? Pretty neat!

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569

In our experience you can get the output with proper wire connections, if not, consider making a pull-up resistor to see if it improves.

570

The core of the map’s display comes from athua’s code (he was smart enough to make the generated core code and share it), and we made some very minor tweaks as well as a handy online code generation tool. There are also some video tutorials and other stuff, so I hope that helps.

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571

Yes, we simply integrated an additional light sensor into the 2A.

572

In the most recent revision of the protocol, version 1.03 (released 10/23, link), methods are provided that can be queried.

I apologize for the Chinese characters, but the protocol command is 0x0091

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573

thanks a lot, i need a way to translate it to implement in ble :smiley:

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574

good luck:)

575

Hey I’m just now reading the blog but can’t get my config to compile in ESPHome and wanted to post my log file and yaml for the build asap. The sooner I get it up the sooner someone might see it and ask some qualifying questions to start trying to overcome this challenge.

Hope anyone is having a good week and thanks for taking the time to read my post.

Jeff

This config is titled for a ld2410c but it is for a ld2450

Log files from ESPHome compile attempt

Link to similar post I made on ld2410 tips page and someone mentioned this page

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576

Hi @screek-workshop not related to HLK-2450, but has there been an update on integrating HLK-6001 to esphome?

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